Automated manipulating system for an industrial robot for arc-welding

Robotica ◽  
1984 ◽  
Vol 2 (4) ◽  
pp. 203-207
Author(s):  
Nedko Shivarov ◽  
Kostadin Yanakiev
Keyword(s):  
Arc Welding ◽  
Assembly Line ◽  
Industrial Robot ◽  
Peripheral Equipment ◽  
Technological Characteristics ◽  
Welding Torch ◽  
Cleaning Device

SUMMARYAn automated manipulating system, which performs the task of loading, positioning and holding of parts in the working area of an industrial robot is discussed in this paper. The system feeds component parts for the lifting mechanisms of electric trucks to be arc-welded by the robot and then removes them, thus completing a predetermined cycle. It is a part of an actual assembly line in a standard workshop for manufacturing electric trucks. The system's operation is described in detail, and the basic technological characteristics of the welding and peripheral equipment are given. Also, some features of an original welding torch cleaning device are described. The principal approach of planning, designing and implementing robotized cells for automatic arc-welding using a robot is also discussed.

Analysis of Five-Degree-of-Freedom Robot Arms

1983 ◽  
Vol 105 (1) ◽  
pp. 23-27 ◽  
Author(s):  
K. Sugimoto ◽  
J. Duffy
Keyword(s):  
Arc Welding ◽  
Degrees Of Freedom ◽  
Screw Theory ◽  
Industrial Robot ◽  
Degree Of Freedom ◽  
Numerical Example ◽  
Robot Arms ◽  
Special Cases ◽  
Computer Controlled ◽  
Five Axes

Many kinds of robot arms with five degrees of freedom are widely used in industry for arc welding, spray painting, assembling etc. It is necessary to be able to compute joint displacements when such devices are computer controlled. A solution to this problem is presented and the analysis is illustrated by a numerical example using the most common industrial robot with five axes. Further, special cases are discussed using screw theory.

Modelling functioning of an adaptive industrial robot in arc welding

2000 ◽  
Vol 14 (1) ◽  
pp. 60-63
Author(s):  
V G Nuzhdikhin ◽  
V K Borisov ◽  
D P limarenko
Keyword(s):  
Arc Welding ◽  
Industrial Robot

scholarly journals An algorithm for the welding torch weaving control of arc welding robot

2015 ◽  
Vol 21 (2) ◽  
Author(s):  
Wen Liang Zhu ◽  
Fu-sheng NI ◽  
Cao-gen HONG
Keyword(s):  
Arc Welding ◽  
Welding Robot ◽  
Welding Torch

scholarly journals Numerical Simulation of the Behavior of Hydrogen Source in a Novel Welding Process to Reduce Diffusible Hydrogen

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1619 ◽  
Author(s):  
Shinichi Tashiro ◽  
Naoki Mukai ◽  
Yoshihide Inoue ◽  
Anthony B. Murphy ◽  
Tetsuo Suga ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Arc Welding ◽  
Gas Flow ◽  
Operating Conditions ◽  
Shielding Gas ◽  
Diffusible Hydrogen ◽  
Welding Torch ◽  
Deposited Metal ◽  
Suction Nozzle ◽  
Gas Nozzle

This study aims to reduce the diffusible hydrogen content in deposited metal during gas metal arc welding (GMAW) and flux-cored arc welding (FCAW) which induces cold cracking. To achieve this, a novel welding torch with a dual gas nozzle has been developed. This special welding torch decreases the hydrogen source gas evaporated from a welding wire by the suction from the inner gas nozzle. In order to improve the suction efficiency of this evaporated gas, precise control of the suction gas flow is indispensable. In this paper, a simplified numerical simulation model of this process has been described. This model can take account of the evaporation of the hydrogen source gas from the wire while simulating the behavior of the shielding gas and the arc. Using this model, the effect of suction nozzle structure and torch operating conditions on suction gas flow pattern and suction efficiency was also investigated to understand the process mechanism. Furthermore, the diffusible hydrogen content in deposited metal was measured by chromatography as a validation step. Results show that some of the shielding gas introduced from a shielding nozzle was drawn inward and also branched into an upward flow that was sucked into the suction nozzle and a downward flow to a base metal. This branching height was defined as the suction limit height, which decisively governed the suction efficiency. As a result, in order to reduce the diffusible hydrogen, it was suggested that the suction limit height should be controlled towards below the wire position, where the evaporation rate of the hydrogen source gas peaks through optimization of the suction nozzle design and the torch operating conditions.

Multi-Pass Route Planning for Thick Plate of Low Alloy High Strength Steel by Double-Sided Double Arc Welding

2012 ◽  
Vol 590 ◽  
pp. 28-34 ◽  
Author(s):  
Cheng Dong Yang ◽  
H.Y. Huang ◽  
H.J. Zhang ◽  
Y.X. Chen ◽  
San Ben Chen
Keyword(s):  
High Strength Steel ◽  
Arc Welding ◽  
Thick Plate ◽  
High Efficiency ◽  
Route Planning ◽  
High Strength ◽  
Welding Parameters ◽  
Welding Torch ◽  
Welding System

Double-sided double arc welding (DSDAW), a high efficiency method for welding thick plate of low alloy high strength steel which does not require back chipping is used in this paper, research on multi-pass route planning for thick plate of low alloy high strength plate by double-sided double arc welding. Firstly, establish a double-sided double arc welding system that can realize thick plate of low alloy high strength steel double-sided double arc welding by double robots. Then, Propose the multi-pass route planning for thick plate of low alloy high strength steel by double-sided double arc welding by means of misplaced welding. According to the welding parameters and the geometry size of groove, plan the layers, the number of beads and the concrete position of the welding torch for each bead. Finally, the welding experiment has been done to verify the effectiveness of multi-pass route planning. The results of welding experiment are approximately agreement with the multi-pass route planning results. The backing weld can get better appearance in the front and guarantee fusion penetration in the back simultaneously. On the basis of the multi-pass welding route planning, good fusion and leveling interface can be obtained after filler passes.

Design on Cleaning Device for Slag of Narrow Gap Submerged Arc Welding

2013 ◽  
Vol 470 ◽  
pp. 404-407
Author(s):  
Wen Ming Zhang ◽  
Xiao Xu Li ◽  
Bin Wang
Keyword(s):  
Arc Welding ◽  
Welding Process ◽  
Submerged Arc Welding ◽  
Narrow Gap ◽  
Time Saving ◽  
Slag Removal ◽  
High Efficient ◽  
Cleaning Device ◽  
Welding Slag ◽  
Submerged Arc

At present, the Narrow Gap Submerged Arc Welding is an advanced welding technology. As the weld is very deep and narrow, the slag is difficult to clean and will have impact on the quality of welding seam. Therefore, a new kind of narrow gap submerged arc welding slag cleaning device is designed to clean the welding slag. It is consisted of welding walking tractor, height adjuster, slag masher, slag cleaner and slag collector. The narrow gap submerged arc welding slag removal device used for the welding process can realize the cleaning that manpower cannot finish. It is a kind of time-saving, energy-saving and high efficient welding cleaning method.

Navigation of Welding Torch for Arc Welding Process

2014 ◽  
Vol 47 (3) ◽  
pp. 7158-7163 ◽  
Author(s):  
WeiJie Zhang ◽  
Jun Xiao ◽  
YuMing Zhang
Keyword(s):  
Arc Welding ◽  
Welding Process ◽  
Welding Torch ◽  
Arc Welding Process

A Study on the Weld Bead Characteristics in Pulsed Gas Metal Arc Welding With Rotating Arc

2004 ◽  
Author(s):  
P. Srinivasa Rao ◽  
O. P. Gupta ◽  
S. S. N. Murty
Keyword(s):  
Arc Welding ◽  
Gma Welding ◽  
Gas Metal Arc Welding ◽  
Bead Geometry ◽  
High Productivity ◽  
Metal Arc Welding ◽  
Welding Torch ◽  
Welding Steel ◽  
Rotating Arc ◽  
Selection Of

Pulsed Gas Metal Arc Welding is widely used in industries because of its high productivity. The bead geometry obtained in welding steel is far from ideal and needs to be improved. It is experimentally observed that the beads are either convex or the penetration is deep and narrow. Both these conditions are undesirable. Proper selection of pulse parameters can improve the wetting, but the penetration remains finger type penetration. An arc rotation mechanism is developed which can be adapted to any conventional GMA welding torch. The beads deposited with rotating arc are flat and the penetration is semi-circular. It is observed that the penetration is maximum only at a particular rotating arc speed.

Design of the Hydraulic System for Carrying Manipulator with 6-DOF

2014 ◽  
Vol 989-994 ◽  
pp. 2802-2806
Author(s):  
Min Wang ◽  
Cai Dong Wang ◽  
Hui Zheng ◽  
Guo Feng Fan
Keyword(s):  
Mathematical Model ◽  
Hydraulic System ◽  
Degrees Of Freedom ◽  
Assembly Line ◽  
Industrial Robot ◽  
Structural Parameters ◽  
Hydraulic Cylinder ◽  
Six Degrees Of Freedom ◽  
Output Force ◽  
Working Principle

According to the requirements for wheel hub assembly line, the structure and hydraulic system of carrying manipulator with six degrees of freedom (DOF) is designed. The working principle of the hydraulic system is analyzed. To minimize the output force of the hydraulic cylinder, a mathematical model of hydraulic cylinder output force and structural parameters is established. And then the manipulator structure is optimized based on Matlab software. The key components of the hydraulic system are selected. This research provides reference for design of similar hydraulic system of industrial robot.

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